Flashing



Dec; I l. c. STEINBERG 4 FLASHING Filed Nov. 20, 1951 INVENTOR ATTORNEY? t Patented Dec. 31, 1935 UNITED STATES PATENT OFFICE 1 Claim.

Ths invention relates to an improved flashing. Flashing is used for insuring a wall or other part of a building structure against leakage or seeping. The practice at present is to lay the flashing of sheet metal between courses of brick in a wall and in particular situations that require it, the flashing is bent down on the outside of the wall and properly installed relative to the roof to cause water on the outer surface of the wall to be directed to the roof.

Flashing is laid on the soft mortar on a course of brick and then more mortar and another course of brick is laid on the flashing and the erection of the wall continued. Flashing, if smooth, forms no binder or lock in the wall, therefore corrugated and other forms of flashing have been used to lock the flashing in place. These flashings have been in some cases commercially successful but have objectionable features in some respects among them excess lateral flexibility and too great a dimension from top to bottom.

My improved flashing is constructed in a manner that stiffens the sheet of metal and at the same time forms a better bond between the courses of brick between which it is placed. The flashing is easily embedded in the soft mortar and presents a surface that to a great extent is flat and even. This form of flashing facilitates the placing of the flashing on the wall.

The invention is illustrated in the accompanying drawing in which Figure 1 is a face view of a piece of flashing made according to my invention. Figure 2 is a section on line 2-2 in Figure 1. Figure 3 is a. detail perspective on a smaller scale and illustrating the flashing placed on a wall with one end bent down against the face of the wall.

The flashing is made in conveniently sized sheets which are joined edge to edge by simple crimping or folding as is common in sheet metal work, for instance, in tin roofing. The sheet is shown at Ill and is of metal that does not rust,

such as copper.

The sheet of flashing I is provided with ridges II and I2 which are inclined alternately in opposite directions each with converging side walls I3 and I4 giving each rib a triangular shape in cross section. These form an inclined recess I5 under each ridge which recess is inclined to form a channel for receiving mortar. The spaces or reaches of the plate It] between theridges is in one plane and presents a substantially flat surpletely filling the recesses I5 and the recessed 10 parts of the projections I6. The mortar is soft and any heavy pressure to force mortar into recess will thin out the layer of mortar and in some cases will disarrange the bricks in the newly laid top course on which the flashing is laid. I show in Figure 3 the bricks I1 and the mortar I8 which is soft and plastic. The flanged flashing is laid down on the mortar and as it is substantially flat on its bottom face very little pressure beyond its own weight is necessary to seat the flashing to flll the recesses I 5 with mortar. The laying of mortar is then resumed. The top face of the flashing and the flashing acts as a lock because the mortar on the top flows into the recesses I9 alongside the ridges I I and I2. This form of flashing with its ridges arranged on one face and these arranged at opposed inclinations does not materially affect the stiffness of the sheet of metal and it is not inconveniently flexible compared to a flashing of the same gage with reaches arranged in parallel planes. The flashing in this present form is capable of economical manufacture and is stiffer and forms a better bond than flashings of the same gage with their supporting surfaces arranged in separate planes. Furthermore, this flashing allows a maximum of motion as its depth is less than those of flashings heretofore made.

I claim:-

A flashing comprising a sheet of readily bendable metal, the major portion of which is in one plane, said sheet being formed with substantially triangular inclined ridges, relatively widely spaced and on the same face of the sheet and extending longitudinally thereof, said ridges arranged alternately in opposite directions, thereby forming overhanging edges on one face of the sheet at each ridge and inclined recesses on the other face of the sheet, said sheet, when bent, bending substantially in a single plane whereby buckling of the sheet is minimized and the ridges folding down on said sheet conform more readily to such bend- 1 1 IRVING C. STEINBERG. 

